Journal
AEROSPACE SCIENCE AND TECHNOLOGY
Volume 70, Issue -, Pages 396-404Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ast.2017.08.023
Keywords
Analytical approach; Nonlinear dynamic response and vibration; Sandwich auxetic composite cylindrical panels; Reddy's first order shear deformation theory; Mechanical; blast and damping loads; Elastic foundations
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Funding
- Vietnam National Foundation for Science and Technology Development (NAFOSTED) [107.02-2015.03]
- National Research Foundation of Korea [22A20130012002] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The main goal of this study is using analytical solution to investigate the nonlinear dynamic response and vibration of sandwich auxetic composite cylindrical panels. The sandwich composite panels have three layers in which the top and bottom outer skins are isotropic aluminum materials, the central auxetic core layer-honeycomb structures with negative Poisson's ratio using the same aluminum material. The panels are resting on elastic foundations and subjected to mechanical, blast and damping loads. Based on Reddy's first order shear deformation theory (FSDT) with the geometrical nonlinear in von Karman and using the Airy stress functions method, Galerkin method and fourth-order Runge-Kutta method, the resulting equations are solved to obtain expressions for nonlinear motion equations. The effects of geometrical parameters, material properties, elastic Winkler and Pasternak foundations, mechanical, blast and damping loads on the nonlinear dynamic response and the natural frequencies of sandwich composite cylindrical panels are studied. (C) 2017 Elsevier Masson SAS. All rights reserved.
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